Eliminates cross-contamination from handle touching. Eliminates odors from unflushed urinals & toilets. Prevents sewer gas buildup with automatic daily flush. Reduces fixture damage from handle kicking. Simple battery replacement without turning the water off. Operates up to two years on one set of 4 C-cell alkaline batteries (alkaline batteries included). On urinal models it has programmable flush for water savings. Toilet models have courtesy manual flush button. Two year warranty fully guaranteed against defects in parts and workmanship. ADA compliant.